23609856 has 80 divisors (see below), whose sum is σ = 66290400. Its totient is φ = 7446528.

The previous prime is 23609851. The next prime is 23609863. The reversal of 23609856 is 65890632.

It is not an unprimeable number, because it can be changed into a prime (23609851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28780 + ... + 29588.

It is an arithmetic number, because the mean of its divisors is an integer number (828630).

Almost surely, 2^23609856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23609856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33145200).

23609856 is an abundant number, since it is smaller than the sum of its proper divisors (42680544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23609856 is an equidigital number, since it uses as much as digits as its factorization.

23609856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 23609856 is about 4858.9974274535. The cubic root of 23609856 is about 286.8783533482.

The spelling of 23609856 in words is "twenty-three million, six hundred nine thousand, eight hundred fifty-six".